Page-21
■ Reference data
Note: This data shows average values for a sample lot.
For rated values, see the specifications on page 4.
1. Connection to multiplexed bus type
(typical)
Finding the frequency stability (clock error)
1. The frequency-temperature characteristics can be
approximated by the following equation:
∆f
T(ppm)=α(θT-θX)
2
2. To determine the overall clock accuracy, add the
frequency tolerance and the voltage characteristics:
∆f/f(ppm)=∆f/f
0 + ∆fT + ∆fV
3. Finding the daily deviation:
Daily error =
∆f/f x 10
-6
x 86400
The clock error is one second per day at 11.574 ppm.
θT = 25˚C Typ.
α = -0.035ppm/˚C
2
Typ.
2. Frequency voltage characteristics
(typical)
3. Current consumption voltage
characteristics (typical)
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